Path = %M2%;%JAVA_HOME%/bin; and others...

如果将%M2%更改为%M2_HOME%\bin，它将起作用.

If you change %M2% to %M2_HOME%\bin it'll work.

确切地说:如果执行设置路径"，则必须包含Maven的bin目录的路径.

To be precise: if you execute 'set Path' it must contain the path to the bin directory of Maven.